package com.example.dell_pc.testgit1;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {
    private TextView mTextView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //我又新加了一些新东西
        mTextView = (TextView) findViewById(R.id.tv_msg);
        mTextView.setText("我今天熟悉一下代码");
    }
}
